This is impossible to answer since each cartridge has its own gram load of toner. Standard Black toner for a HP cartridge varies between only 90 grams of toner in their smallest standard cartridge up...
Did you mean the molecule benzil, or the ion benzyl, or benzene?
Benzil is not recognized as being carcinogenic.
Most compounds containing benzyl ion are not carcinogenic (benzyl alcohol for...
do you mean pheomelanin the pigment in hair and skin? Pheomelanin is also found in hair and skin and is both in lighter skinned humans and darker skinned humans. Pheomelanin imparts a pink to red hue...